Reason Maintenance in Product Modeling

1995 ◽  
Vol 117 (2) ◽  
pp. 223-231 ◽  
Author(s):  
R. Vujosevic ◽  
A. Kusiak ◽  
E. Szczerbicki
Keyword(s):  
Computer Program ◽  
Object Oriented ◽  
Product Modeling ◽  
Maintenance System ◽  
Multiple Worlds ◽  
Design Alternatives ◽  
Truth Maintenance ◽  
Reason Maintenance

An approach to product modeling by using a reason maintenance system to reduce the amount of search required for the identification of feasible designs is described. An assumption-based truth maintenance system and multiple worlds are used to discover and store information about feasible designs and to avoid further consideration of infeasible design alternatives. An object-oriented computer program for product modeling is presented.

Data Base Requirements for Concurrent Design Systems

1991 ◽  
Author(s):  
Ranko Vujosevic ◽  
Andrew Kusiak
Keyword(s):  
Data Base ◽  
Data Model ◽  
Object Oriented ◽  
Concurrent Design ◽  
Complex Objects ◽  
Maintenance System ◽  
Design And Manufacturing ◽  
Design Systems ◽  
Truth Maintenance ◽  
Definition Of

Abstract The data base requirements for concurrent design systems are discussed. An object-oriented data base, which allows for definition of complex objects, specification of relationships between objects, and modular expandability without affecting the existing information is defined. The data base is developed based on the object-oriented data model implemented in Smalltalk-80. An assumption-based truth maintenance system for maintaining the dependency relationships between design and manufacturing information is described.

Conformational analysis using a truth maintenance system

1988 ◽  
Vol 6 (2) ◽  
pp. 74-79 ◽  
Author(s):  
Timothy Koschmann ◽  
James P. Snyder ◽  
Peter Johnson ◽  
Thom Grace ◽  
Martha W. Evens
Keyword(s):  
Conformational Analysis ◽  
Maintenance System ◽  
Truth Maintenance

scholarly journals Application of computer technologies for calculation of gears at studying of a course " Details of machines"

2021 ◽  
pp. 15-20
Author(s):  
Olena Nadtoka ◽  
Denis Nadtoka
Keyword(s):  
Computer Program ◽  
Object Oriented ◽  
Spur Gear ◽  
Helical Gear ◽  
Bevel Gear ◽  
Object Oriented Programming ◽  
Transmission Parameters ◽  
Separate File ◽  
Machine Parts ◽  
Oriented Programming Language

The computer program GearKURT has been created to calculate mechanical gears. The program allows you to calculate gears: - closed cylindrical spur gear - closed cylindrical helical gear - open cylindrical spur gear - Novikov's gear - closed bevel spur gear - closed bevel gear with indirect teeth - open bevel gear - worm-gear. The computer program has a dialog interface written in the object-oriented programming language Delphi and compiled into an exe-file. The program allows you to choose the necessary material and method of heat treatment for the manufacture of gears, to calculate the optimal geometric dimensions and transmission parameters, to determine the design of gears. The program provides all the necessary reference materials in the form of tables and graphs, which must be used to select the coefficients and other values necessary for calculations. The program provides access to the theoretical material of the course "Machine Parts" and the ability to save the results of calculations in a separate file. Recommendations for using this program are given.

Estimation of the Scope of Change Propagation in Object-Oriented Programming

2010 ◽  
Author(s):  
Elmira Rajinia ◽  
Simon Li
Keyword(s):  
Computer Program ◽  
Systematic Approach ◽  
Matrix Representation ◽  
Object Oriented ◽  
Object Oriented Programming ◽  
Change Propagation ◽  
The Core ◽  
The Matrix ◽  
Made In

When minor modifications need to be made in an object-oriented computer program, they often incur further more changes due to the presence of dependency in the codes and the program structure. Yet, to accommodate the required change, there can also be more than one option to carry out the initial modifications. To select the modification option in this context, this paper proposes a systematic approach to estimate the scope of change propagation of an object-oriented program given some initial modifications. The strategy is to first capture the dependency relationships of the entities pertaining to an object-oriented program via the matrix representation. Based on this matrix-based model, the priority number method is proposed and applied to estimate the scope of change propagation by assuming some initial modifications. The core of this method is to estimate the chance of affecting other program entities due to some modified entities. A case study is conducted throughout the paper to illustrate and justify the proposed method.

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